public static void FlashGeometry(IScreenDisplay display, IEnumerable <IGeometry> geometries)
{
IRgbColor color = new RgbColor();
color.Green = color.Blue = 0;
color.Red = 255;
short cacheId = display.AddCache();
display.StartDrawing(display.hDC, cacheId);
geometries.ToList().ForEach(geometry =>
{
if (symbolsToFlash.ContainsKey(geometry.GeometryType))
{
var symbol = symbolsToFlash[geometry.GeometryType].Invoke(color);
display.SetSymbol(symbol);
actionToFlash[geometry.GeometryType].Invoke(display, geometry);
}
else
{
throw new KeyNotFoundException("{0} cannot be found in the Symbol dictionary".InvariantFormat(geometry.GeometryType));
}
});
display.FinishDrawing();
tagRECT rect = new tagRECT();
display.DrawCache(display.hDC, cacheId, ref rect, ref rect);
System.Threading.Thread.Sleep(300);
display.Invalidate(rect: null, erase: true, cacheIndex: cacheId);
display.RemoveCache(cacheId);
}
///<summary>Flash geometry on the display.</summary>
///<param name="geometry"> The input IGeometry to flash. Supported geometry types are GeometryBag, Polygon, Polyline, Point and Multipoint.</param>
///<param name="screenDisplay">An IScreenDisplay reference</param>
///<param name="delay">An integer that is the time in milliseconds to wait.</param>
public static void FlashGeometry(IGeometry geometry, IScreenDisplay screenDisplay, int delay, int times)
{
if (geometry == null || screenDisplay == null)
{
return;
}
bool continueFlashing = true;
using (ComReleaser comReleaser = new ComReleaser())
{
ITrackCancel cancelTracker = new CancelTrackerClass();
comReleaser.ManageLifetime(cancelTracker);
screenDisplay.CancelTracker = cancelTracker;
short cacheID = screenDisplay.AddCache();
int cacheMemDC = screenDisplay.get_CacheMemDC(cacheID);
IRgbColor fillColor = new RgbColorClass();
comReleaser.ManageLifetime(fillColor);
fillColor.Green = 128;
IRgbColor lineColor = new RgbColorClass();
comReleaser.ManageLifetime(lineColor);
screenDisplay.StartDrawing(cacheMemDC, cacheID);
DrawGeometry(geometry, fillColor, lineColor, (IDisplay)screenDisplay, cancelTracker);
ESRI.ArcGIS.esriSystem.tagRECT RECT = new tagRECT();
screenDisplay.FinishDrawing();
for (int j = 0; j < times; j++)
{
if (continueFlashing == true)
{
screenDisplay.DrawCache(screenDisplay.hDC, cacheID, ref RECT, ref RECT);
if (delay > 0)
{
System.Threading.Thread.Sleep(delay);
screenDisplay.Invalidate(null, true, cacheID);
screenDisplay.UpdateWindow();
System.Threading.Thread.Sleep(delay);
}
}
}
//---------------------------------------------------------------------
screenDisplay.RemoveCache(cacheID);
cancelTracker.Reset();
}
}
